Question

Efetue as multiplicações​

Answer 1

Resposta:

Olá,

$a) \: ( - 7) \times ( - 9) \times ( + 13) =$

$63 \times ( + 13) = 819$

$b) \: ( + 18) \times ( + 2) \times ( + 3) \times ( - 2) =$

$36 \times ( + 3) \times ( - 2) =$

$108 \times ( - 2) = - 216$

$c) \: ( - 4) \times ( + 2) \times ( - 12) =$

$- 8 \times ( - 12) = 96$

$d) \: ( + 4) \times ( - 7) \times ( + 9) \times ( - 13) =$

$- 28 \times ( + 9) \times ( - 13) =$

$- 252 \times ( - 13) = 3276$